Home / 393-858

Finding the Third Proportional to 393 and 858

Calculator

Solution

The third proportional to 393 and 858 is: 1,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    393 : 858 = 858 : x
  2. Step 2: Convert to fraction form
    393/858 = 858/x
  3. Step 3: Cross multiply
    393x = 858 × 858
  4. Step 4: Simplify right side
    393x = 736,164
  5. Step 5: Solve for x
    x = 736,164/393
  6. Step 6: Final answer
    x = 1,873.19

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.